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Segment disclosures

Company overview

DUKE ENERGY CORPORATION

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

7 dimension combinations 85 retained observations 10 reported periods

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Commercial Power

Statement Business Segments

Multiple units reported for the same period; values are kept separate.

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:CommercialPowerMember
PeriodValueUnitFiledEvidence
2012-04-01 – 2012-06-30488000000 USD20120808Open filing evidence
2012-01-01 – 2012-06-301052000000 USD20120808Open filing evidence
2012-01-01 – 2012-03-31564000000 Unit1220120509Open filing evidence
2011-01-01 – 2011-12-312480000000 Unit1220120228Open filing evidence
2011-07-01 – 2011-09-30684000000 Unit1220111108Open filing evidence
2011-01-01 – 2011-09-301918000000 Unit1220111108Open filing evidence
2011-04-01 – 2011-06-30592000000 Unit1220110808Open filing evidence
2011-04-01 – 2011-06-30592000000 USD20120808Open filing evidence
2011-01-01 – 2011-06-301234000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-06-301234000000 USD20120808Open filing evidence
2011-01-01 – 2011-03-31642000000 Unit1220120509Open filing evidence
2010-01-01 – 2010-12-312440000000 Unit1220120228Open filing evidence
2010-07-01 – 2010-09-30736000000 Unit1220111108Open filing evidence
2010-01-01 – 2010-09-301850000000 Unit1220111108Open filing evidence
2010-04-01 – 2010-06-30537000000 Unit1220110808Open filing evidence
2010-01-01 – 2010-06-301114000000 Unit1220110808Open filing evidence
2009-01-01 – 2009-12-312109000000 Unit1220120228Open filing evidence

International Energy

Statement Business Segments

Multiple units reported for the same period; values are kept separate.

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:InternationalEnergyMember
PeriodValueUnitFiledEvidence
2012-04-01 – 2012-06-30397000000 USD20120808Open filing evidence
2012-01-01 – 2012-06-30799000000 USD20120808Open filing evidence
2012-01-01 – 2012-03-31402000000 Unit1220120509Open filing evidence
2011-01-01 – 2011-12-311467000000 Unit1220120228Open filing evidence
2011-07-01 – 2011-09-30360000000 Unit1220111108Open filing evidence
2011-01-01 – 2011-09-301114000000 Unit1220111108Open filing evidence
2011-04-01 – 2011-06-30406000000 Unit1220110808Open filing evidence
2011-04-01 – 2011-06-30406000000 USD20120808Open filing evidence
2011-01-01 – 2011-06-30754000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-06-30754000000 USD20120808Open filing evidence
2011-01-01 – 2011-03-31348000000 Unit1220120509Open filing evidence
2010-01-01 – 2010-12-311204000000 Unit1220120228Open filing evidence
2010-07-01 – 2010-09-30273000000 Unit1220111108Open filing evidence
2010-01-01 – 2010-09-30919000000 Unit1220111108Open filing evidence
2010-04-01 – 2010-06-30310000000 Unit1220110808Open filing evidence
2010-01-01 – 2010-06-30646000000 Unit1220110808Open filing evidence
2009-01-01 – 2009-12-311158000000 Unit1220120228Open filing evidence

Other Segments Adjustment

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:OtherSegmentsAdjustmentMember
PeriodValueUnitFiledEvidence
2012-01-01 – 2012-03-314000000 Unit1220120509Open filing evidence
2011-01-01 – 2011-12-31-4000000 Unit1220120228Open filing evidence
2011-07-01 – 2011-09-303000000 Unit1220111108Open filing evidence
2011-01-01 – 2011-09-30-2000000 Unit1220111108Open filing evidence
2011-04-01 – 2011-06-30-4000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-06-30-5000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-03-31-1000000 Unit1220120509Open filing evidence
2010-01-01 – 2010-12-3165000000 Unit1220120228Open filing evidence
2010-07-01 – 2010-09-303000000 Unit1220111108Open filing evidence
2010-01-01 – 2010-09-3041000000 Unit1220111108Open filing evidence
2010-04-01 – 2010-06-3024000000 Unit1220110808Open filing evidence
2010-01-01 – 2010-06-3038000000 Unit1220110808Open filing evidence
2009-01-01 – 2009-12-3172000000 Unit1220120228Open filing evidence

Total Reportable Segments

Statement Business Segments

Multiple units reported for the same period; values are kept separate.

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:TotalReportableSegmentsMember
PeriodValueUnitFiledEvidence
2012-04-01 – 2012-06-303573000000 USD20120808Open filing evidence
2012-01-01 – 2012-06-307199000000 USD20120808Open filing evidence
2012-01-01 – 2012-03-313626000000 Unit1220120509Open filing evidence
2011-01-01 – 2011-12-3114533000000 Unit1220120228Open filing evidence
2011-07-01 – 2011-09-303961000000 Unit1220111108Open filing evidence
2011-01-01 – 2011-09-3011163000000 Unit1220111108Open filing evidence
2011-04-01 – 2011-06-303538000000 Unit1220110808Open filing evidence
2011-04-01 – 2011-06-303538000000 USD20120808Open filing evidence
2011-01-01 – 2011-06-307202000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-06-307202000000 USD20120808Open filing evidence
2011-01-01 – 2011-03-313664000000 Unit1220120509Open filing evidence
2010-01-01 – 2010-12-3114207000000 Unit1220120228Open filing evidence
2010-07-01 – 2010-09-303943000000 Unit1220111108Open filing evidence
2010-01-01 – 2010-09-3010786000000 Unit1220111108Open filing evidence
2010-04-01 – 2010-06-303263000000 Unit1220110808Open filing evidence
2010-01-01 – 2010-06-306843000000 Unit1220110808Open filing evidence
2009-01-01 – 2009-12-3112659000000 Unit1220120228Open filing evidence

Usfe G

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:UsfeGMember
PeriodValueUnitFiledEvidence
2011-07-01 – 2011-09-302917000000 Unit1220111108Open filing evidence
2011-01-01 – 2011-09-308131000000 Unit1220111108Open filing evidence
2011-04-01 – 2011-06-302540000000 Unit1220110808Open filing evidence
2011-01-01 – 2011-06-305214000000 Unit1220110808Open filing evidence
2010-07-01 – 2010-09-302934000000 Unit1220111108Open filing evidence
2010-01-01 – 2010-09-308017000000 Unit1220111108Open filing evidence
2010-04-01 – 2010-06-302416000000 Unit1220110808Open filing evidence
2010-01-01 – 2010-06-305083000000 Unit1220110808Open filing evidence

US Franchised Electric And Gas

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=duk:USFranchisedElectricAndGasMember
PeriodValueUnitFiledEvidence
2012-04-01 – 2012-06-302688000000 USD20120808Open filing evidence
2012-01-01 – 2012-06-305348000000 USD20120808Open filing evidence
2012-01-01 – 2012-03-312660000000 Unit1220120509Open filing evidence
2011-01-01 – 2011-12-3110586000000 Unit1220120228Open filing evidence
2011-04-01 – 2011-06-302540000000 USD20120808Open filing evidence
2011-01-01 – 2011-06-305214000000 USD20120808Open filing evidence
2011-01-01 – 2011-03-312674000000 Unit1220120509Open filing evidence
2010-01-01 – 2010-12-3110563000000 Unit1220120228Open filing evidence
2009-01-01 – 2009-12-319392000000 Unit1220120228Open filing evidence

All Other Segments

Statement Business Segments

Source dimensions us-gaap:StatementBusinessSegmentsAxis=us-gaap:AllOtherSegmentsMember
PeriodValueUnitFiledEvidence
2012-04-01 – 2012-06-304000000 USD20120808Open filing evidence
2012-01-01 – 2012-06-308000000 USD20120808Open filing evidence
2011-04-01 – 2011-06-30-4000000 USD20120808Open filing evidence
2011-01-01 – 2011-06-30-5000000 USD20120808Open filing evidence